Self Replicating Turtles in Minecraft ComputerCraft!

Minecraft robots are now able to reproduce on their own! Witness the future conquerors of the overworld, machines one criterion closer to being alive!

This is one in a series of projects I'm attempting, all with the theme of bringing turtles to life, and making them the gentle, autonomous creatures they were always meant to be.

—CODE—
Code: https://pastebin.com/YtvRxY9j
What to type in your mining-crafty turtle (without quotes): "pastebin get YtvRxY9j turtlogenesis"

—TUTORING—
I teach now! I do 1-on-1, remote tutoring lessons where you can learn to code using ComputerCraft. It's a super fun way to learn, and we make some neat stuff along the way. My site is merlintutoring.com, hit me up!

—TIMESTAMPS—
0:00 Intro
1:05 Setup
2:24 Subterranean search
6:57 Superterranean search
8:06 Nest building
10:06 Crafting items
12:16 Turtlogenesis

"But the machines which reproduce machinery do not reproduce machines after their own kind. A thimble [turtle] may be made by machinery, but it was not made by, neither will it ever make, a [turtle]" - The Book of the Machines, Samuel Butler, 1872